Telescopic glareshade for automobiles

Abstract

A telescopic glareshade is provided with an outer shelter and an inner shade board which is adjustably engaged with the outer shelter. The inner shade board has a bulged top end having a mushroom shaped cross section which can be in frictional contact with the inner faces of the outer shelter so as to constantly retain the shade board in place. The outer shelter has a longitudinal extended opening for the passage of the inner shade board and a pair of parallel stop flanges are defined on the edges of opening so as to prevent the inner shade board from disengagement from the outer shelter when pulled down to the bottomost end.

We claim: 
     
       1. A telescopic glareshade fixable in a vehicle for stopping glaring sunbeams from annoying a driver, comprising: a rectangular hollow outer shelter;   an inner shade board telescopically housed in said outer shelter;   said outer shelter having a bottom opening extending the full length longitudinally for insertion of said inner shade board;   at said opening a pair of parallel hooked stop protrusions being disposed at each longitudinal rim of said opening;   said stop protrusions being provided with smoothly rounded surfaces;   said inner shade board having a longitudinal bulged top end having a mushroom shaped cross section at the top side and a longitudinal stop flange disposed at the bottom side thereof;   a through hole being disposed at the center of said stop flange for easy holding of said inner shade board;   said bulged top end having a rounded surface so as to be easily pushed into said bottom opening of said outer shelter against said smoothly rounded surfaces of said stop protrusions in assembly;   said bulged top end having hooked portions which can be in limiting engagement with said stop protrusions so as to prevent said inner shade board from disengagement from said outer shelter when said telescopic inner shade board is being pulled to extend to its full length;   said bulged top end being in tight frictional contact with inner walls of said outer shelter and said hooked stop protrusions being clamped against said outer walls of said inner shade board so that said inner shade board is retainable in position when the inner shade board is telescopically adjusted.   
     
     
       2. A telescopic glareshade as claimed in claim 1 wherein said hooked portions of said bulged top end of said inner shade board are equipped with a a plurality of teeth so as to permit said hooked portions in frictional contact with the inner walls of said outer shelter to be flexibly operated when said inner shade board is pulled downwardly or pushed upwardly.